Two men A and B, each working alone by working 12 hours per day, can complete a work in 20 days. For execution of the work, it was dedicated that A and B would be working for 8 and 6 hours per day, respectively, on alternate days starting with A. if it takes x days and y hours to complete the work then (x,y) is:

A

(34, 2)

B

(33, 2)

C

(34, 4)

D

(33, 4)